Home / 1,178.05-1,764.67-945.68

Finding the Fourth Proportional to 1,178.05, 1,764.67 and 945.68

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Solution

The fourth proportional to 1,178.05, 1,764.67 and 945.68 is: 1,416.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178.05 : 1,764.67 = 945.68 : x
  2. Step 2: Convert to fraction form
    1,178.05/1,764.67 = 945.68/x
  3. Step 3: Cross multiply
    1,178.05x = 1,764.67 × 945.68
  4. Step 4: Simplify right side
    1,178.05x = 1,668,813.13
  5. Step 5: Solve for x
    x = 1,668,813.13/1,178.05
  6. Step 6: Final answer
    x = 1,416.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.